Detergent (soap) compositions

ABSTRACT

A COMPOSITION USEFUL FOR THE MANUFACTURE OF A DETERGENT COMPOSITION EVIDENCING UNUSUAL EMOLLIENCE AND SKIN CLEANING ACTION CONSISTS ESSENTIALLY OF ABOUT 5-15% BY WEIGHT BEESWAX, 5-15% BY WEIGHT OF A POLYHYDRIC ALCOHOL SELECTED FROM THE GROUP CONSISTING OF PROPYLENE GLYCOL AND GLYCERIN. 30-50% BY WEIGHT OF A POLOXALENE HAVING AN AVERAGE MOLECULAR WEIGHT OF ABOUT 11,500, POLOXALENE BEING A POLY (OXYETHYLENE)-POLY(OXYPROPYLENE)-POLY (OXYETHYLENE) POLYMER ALSO KNOW AS DIPOLYOXYETHYLATED POLYPROPYLENEGLYCOL ETHER OR OXYETHYLENE OXYPROPYLENE POLYMER, A BLOCK POLYMER OF ETHYLENE OXIDE AND PROPYLENE OXIDE, AND 30-50% BY WEIGHT OF A FATTY ALKYL ESTER ISETHIONATE. A PARTYICULARLY USEFUL COMPOSITION IS A HOMOGENEOUS SOLID ADMIXTURE CONSISTING ESSENTIALLY OF ABOUT 9% BY WEIGHT BEESWAX, 9% BY WEIGHT PROPYLENE GLYCOL, 40% BY WEIGHT OF POLOXALENE HAVING A MOLECULAR WEIGHT OF ABOUT 11.500, E.G. PLURONIC F-127, MANUFACTURED BY BASF WYANDOTTE CORP., ABOUT 40% BY WEIGHT OF A COCONUT OIL ACID ESTER OF SODIUM ISETHIONATE, SUCH AS IGEPON AC-78, MANUFACTURED BY GAF CORP., 2% BY WEIGHT OF A NON-IONIC OR ANIONIC SURFACTANT, SUCH AS SODIUM LAURYL SULFATE, E.G. DUPONOL C, MANUFACTURED BY E. I. DU PONT DE NEMOURS &amp; CO., OR AVIROL 122, MANUFACTURED BY STANDARD CHEMICAL COMPANY, ABOUT 0.1-1.0% BY WEIGHT ALLANTION AND ABOUT 0.1-1% BY WEIGHT OF A PERFUME OR SCENTING AGENT.

United States Patent'O 3,766,097 DETERGENT (SOAP) COMPOSITIONS Philip F.Rosmarin, 200 E. 66th 'St., New York, N.Y. 10021 7 No Drawing. FiledAug. 9, 1971, Ser. No. 170,372 .Int. Cl. Clld 1/12, 1/72, 1/83 U.S. Cl.252-552 28 Claims ABSTRACT OF THE DISCLOSURE A composition useful forthe manufacture of a detergent Composition evidencing unusual emollienceand skin cleansing action consists essentially of about -15% by weightbeeswax, 5-15% by weight of a polyhydric alcohol selected from the groupconsisting of propylene glycol and glycerin, 30-50% by weight of apoloxalene having an average molecular weight of about 11,500,poloxalene being a poly(oxyethylene)-poly(oxypropylene)-poly(oxyethylene) polymer also known asdipolyoxyethylated polypropyleneglycol ether or oxyethylene oxypropylenepolymer, a block polymer of ethylene oxide and propylene oxide, and30-50% by weight of a fatty alkyl ester isethionate. A particularlyuseful composition is a homogeneous solid admixture consistingessentially of about 9% by weight beeswax, 9% by weight propyleneglycol, 40% by weight of poloxalene having a molecular weight of about11,500, e.g. 'Pluronic 'F-l27, manufactured by BASF Wyandotte Corp.,about 40% by weight of a coconut oil acid ester of sodium isethionate,such as Igepon AC-78, manufactured by GAF Corp., 2% by weight of anon-ionic or anionic surfactant, such as sodium lauryl sulfate, e.g.Duponol C, manufactured by E. I. du Pont de Nemours & Co., or Avirol122, manufactured by Standard Chemical Company, about 01-10% by weightallantoin and about 0.1-1% by weight of a perfume or scenting agent.

This invention relates to compositions and methods useful for thepreparation of detergent compositions, particularly detergent toilet barcompositions or aqueous liquid detergent compositions. In accordancewith one embodiment this invention is directed to the preparation ofdetergent compositions possessing high emollience and a gentle qualitywhen employed to cleanse the skin. In accordance with another embodimentthis invention is directed to an aqueous detergent composition capableof being employed to cleanse the skin and suitable for being applied tothe hair as a shampoo and the like.

Ordinary fatty acid soaps employed to cleanse the skin are irritating tothe eye and are alkaline and cause the natural pH of the skin to becomealkaline when employed to wash the skin. Further, many ordinary soaps orsoap bars disintegrate and become soft and gelatinous upon constant useor exposure to water.

It is an object of this invention to provide a detergent compositionuseful for the manufacture of non-soap detergent toilet barcompositions.

It is another object of this invention to provide a detergentcomposition useful for the manufacture of toilet bars which, whenemployed to cleanse the skin provide a bland, non-eye-irritating,non-alkaline emollience as well as excellent cleansing action.

It is another object of this invention to provide a detergent toilet barcomposition which is storage stable, fairly long lasting whenemployed tocleanse the skin while at the same time possessing a strong cleansingaction and which provides a relatively easy removal of soil and cosmeticmake-up from the skin, including the sometimes diflicult to removewater-proof mascara.

How these and other objects of this invention are achieved will becomeapparent in the light of the accom- "Ice panying disclosure. In at leastone embodiment of the practice of this invention at leastone of theforegoing objects will be achieved.

In accordance with this invention a detergent composition possessingunusual emollience and skin cleansing action is provided by acomposition which contains a substantial but minor amount by weight ofbeeswax, such as white beeswax. In the detergent composition inaccordance with this invention the beeswax is present therein in anamount in the range of about 5-15 by weight, together with othermaterials, particularly other emollients and surfactants which, incombination with the beeswax, provide bulk and hardness and cleansingability to the resulting composition.

Beeswax or yellow beeswax is a substance obtained from the honeycomb ofthe bee. Beeswax consists of esters of straight chain monohydricalcohols with even numbered carbon chains from C to C esterified withstraight chain acids also having even numbers of carbon atoms up to Cwith some C 'hydroxy acids, see the Merck Index, 8th Ed., published byMerck & CO., Inc. (1968). Beeswax is yellowish to brownish yellow incolor and soft to brittle, possesses a honey-like odor and a slightbalsamic taste. Beeswax is substantially insoluble in water. Whitebeeswax which is preferred as the beeswax component in the preparationof compositions in accordance with this invention is bleached yellowbeeswax and is yellowish-white in color and possesses a slightlydifferent taste than yellow beeswax but otherwise it has the sameproperties.

Another component of detergent compositions in accordance with thisinvention is a polyhydric alcohol, such as propylene glycol or glycerin.This material serves as a solvent and also as an emollient and is, likethe beeswax, employed in a substantial but minor amount in the detergentcompositions of this invention. Specifically, the propylene glycol orglycerin is employed in an amount in the range from about 5 to about 15%by weight of the detergent compositions.

' Another component in the preparation of the detergent compositions ispoloxalene. Poloxalene is a poly(oxyethylene) poly(oxypropylene)poly(oxyethylene) polymer, a block polymer containing approximately 70%ethylene oxide and 30% propylene oxide. Preferably, the poloxaleneemployed in the detergent compositions of this invention has an averagemolecular weight of about 11,500 and a minimum melting point of about5556 C., more or less. A suitable such poloxalene is manufactured andsold by BASF Wyandotte Corp. under the trademark Pluronic F-l27. Thepoloxalene employed in the detergent compositions of this invention isusually present in a substantial but minor amount, such as in an amountof about 30-50% by weight, more or less. This material in addition tobeing a surfactant also provides bulk and hardness to the detergentcompositions.

Another component of the superior beeswax, propylene glycol andpoloxalene-containing compositions in accordance with this invention isa fatty al-kyl ester isethionate. Especially preferred is the coconutacid ester of sodium isethionate. A suitable fatty alkyl esterisethionate useful in the preparation of detergent compositions inaccordance with this invention is manufactured by GAF Corp. under thetrademark Igepon AC-78. Like the poloxalene this material is asurfactant and is employed in substantial, usually minor amounts, suchas an amount in the range from about 30 to about 50% by weight of thecomposition. The lather properties of Igepon AC-78 resemble those ofsoaps in soft water.

'Desirably, there is also incorporated in the detergent compositions ofthis invention a wetting agent, such as an anionic or non-ionicdetergent or surfactant. This component, i.e. the wetting agent, isespecially effective in minor amountsas a sudsing or lathering agent totrigger or spark suds from the detergent composition upon use inwashing. It aids the release and wetting of the other components in thecomposition, such as thelgepon AC-78. Very many such agents are usefullyemployed in the subject detergent compositions. Sodium lauryl sulfatehas been found to be particularly satisfactory. S dium laurylsulfate isemployed in a minor amount, such as an amount in the range from about 2%to about 5% by weight, more or less, e.g. 3.3%. A suitable sodium laurylsulfate useful in the preparation of the detergent compositionsdescribed herein is manufactured by E. I. du Pont de Nemours & Co.,under the trademark Duponol C and by Standard Chemical Company under thetrademark Avirol 122.

Additionally, if desired, there may also be incorporated in thedetergent composition very minor amounts of additive materials, such asallantoin, bactericidal agents and the like and a perfuming or scentingagent. Usually these additives are present in a very minor amount in therange from about 0.1 to about 1-2% by weight, more or less. For example,allantoin may be usefully incorporated in an amount of about 0.25-0.5%by weight and a perfuming or scenting agent may be employed in an amountfrom about 0.2 to about 0.75% by weight, more or less. Other additivematerials, such as coloring agents, may also be usefully incorporated orpresent in the finished detergent composition in effective, but minoramounts, such as an amimnt in the range 0.01 to about 1-2% by weight,more or ess.

Accordingly, a composition of a detergent material prepared inaccordance with this invention is beeswax, 5- by weight, preferably 9%by weight, a polyhydric alcohol, such as glycerin or, preferably,propylene glycol, in an amount 5-15% by weight, preferably 9% by weight,a poloxalene, preferably having an average molecular weight of 11,500,in an amount in the range -50% by weight, preferably by weight, a fattyalkyl ester isethionate, such as the coconut acid ester of sodiumisethionate in the range 30-50% by weight, preferably about 40% byweight, a sudsing or wetting agent, such as sodium lauryl sulfate, inthe range 2-5% by weight, preferably 2% by weight. Additionally, ifdesired, there is incorporated in the detergent composition allantoin inan amount in the range 0.1-1.0% by weight, preferably 0.25% by Weightand a scenting agent or perfume in an amount of about 0.10 to about 2%by weight, preferably about 1% by weight.

The following is exemplary of one embodiment of the practice of thisinvention directed to the preparation of a detergent composition usefulfor the manufacture of detergent toilet bars and the like. Fifty fourparts by. Weight bleached white 100% pure natural beeswax together witha substantial equal amount, about 55 parts by weight propylene glycoland about 240 parts by weight poloxalene having an average molecularweight of about 11,500, such as Pluronic F-127, were gently heated andmixed together until all solids were dissolved leaving the solutionclear and transparent. Thereafter, a very minor amount of perfume, suchas about 6 parts by weight perfume A-4908 manufactured by Ungerer Co.were added. Upon addition of the perfume gentle mixing or stirring ofthe clear molten mix was carried out to form a uniform mass withoutaerating the molten mass. Thereafter, finely divided, well siftedsudsing agent, such as sodium lauryl sulfate, in the amount of 12 partsby weight, allantoin in the amount of about 1.25 parts by Weight and afatty alkyl ester isethionate, viz. Igepon AC-78 in the amount of about235 parts by weight were added with stirring and gentle heating untilall the powders were completely dispersed in the molten mix and ahomogeneous molten mass formed. The temperature of the molten mix isusually at this stage about 75-80 C.

The resulting molten mass can then be poured into molds, such as toiletbar molds made of silicon rubber,

4 and allowed to cool and solidify. When cooled and solidified, thematerial, i.e. the solidified detergent material in the form of toiletbars; are removed from the molds and may be packed or further processedas the finished product.

If desired, instead of directly pouring the molten mix into the moldsthe'molt en mix may be permitted to cool and solidify in the containerwithin which it was formed or in another container. After a suitableperiod of time, when desired, this relatively cool substantiallysolidified mass may be reheated, such as on a steam bath, and stirreduntil smooth and flowing andthen put into molds and permitted to cooland solidify. When these detergent bars are removed from the molds, theyare in good solid form and appear to provide, when employed incleansing, a better toilet bar, yielding a better slip feeling andimproved lathering.

The aforesaid solid toilet bar detergent compositions based on theabove-mentioned parts by weight contains about 9% by weight beeswax, 9%by weight propylene glycol, 40% by weight poloxalene, about 40% byWeight fatty alkylester isethionate, about 2% by weight sodium laurylsulfate, about 1% by Weight perfume and about 0.25% by weight allantoin.These detergent bars exhibit substantially no weight loss upon storageand possess excellent stability and storage capability. It was observedthat bars made up of the above-identified compositions require only arelatively very small'amount of perfume if it is desired to providethese bars with a scent, such as a floral scent. Ordinary soap barsrequire a substantially higher amount of perfume. The resulting toiletbars provide a bland, non-alkaline, noneye-irritating, emollient for theskin. Physically the toilet bars are hard but smooth to the touch andlong lasting and when employed in washing leaves the skin with aslightly lubricated feeling. The use of the detergent bar in washingappears to prevent or reduce chapping in'cold weather and provides apowerful cleansing action. Further, in the preparation of theabove-described detergent compositions in accordance with this inventionno water is employed and there vided detergent composition, as describedhereinabove, isprepared. This liquid detergent cleanser is prepared,for:

example, by heating 30 parts by weight of the above-described detergentcomposition in about 50-51 parts byweight deionized water. Three partsby weight of .polyvinylpyrrolidone K-30 manufactured by GAF Corp. arethen added and the resulting admixture mixed. and heated untilsubstantially all the solids are dissolved. At about 75 C. heating isdiscontinued and the resulting aqueous liquid admixture permitted tocoolto about 50 C. At about that temperature an additional amount ofwater, about 16 parts by weight containing about 0.2 part by weightDowicil 200, an antimicrobial manufactured by Dow Chemical Co. dissolvedtherein is added with continued mixing until the temperature of theaqueous admixture has dropped to about room temperature. At about roomtemperature an additional amount of water is added to bring the totaladmixture to about parts by weight. I

The resulting liquid cleanser is opaque, White in color and whenlathered on wet skin produces copious suds. When applied to wet hair itfoams well and cleans the hair and scalp satisfactorily. It is readilyrinsed away with. water and leaves the hair and scalp free ofanyresidue.

This liquid cleanser does not change. or affect the color ofthehair,particularly hair which has been dyed nor does itpstrip'dye from thehair.

' In accordance with another embodiment of the practice of thisinvention for the preparation of a stable aqueous liquid skin and haircleanser, there is mixed together with heatingto about 76 C. to providea uniform melt, 508 parts by weight deionized water, 27.5 parts byweight propylene glycol, 27 parts by weight beeswax and 119 parts byweight poloxalene, viz. Pluronic F-127. Thereafter, after a uniform meltat a temperature of about 76 C. has'been obtained, there are added 116parts by weight of a fatty alkyl ester isethionate, viz. Igepon AC- 78,'6'parts by weight sodium lauryl sulfate, viz. Duponol C. and 0.75 partby weight allantoin. The resultion admixture is stirred with heating toa temperature of about 78 C. Thereafter, heating is discontinued andwith stirring 30 parts by weight polyvinylpyrrolidone K-30 is slowlyadded and dispersed into the admixture. While the admixture is slowlycooling at about 50 C., 160 parts by weight deionized tap watercontaining about 2 parts'by weight Dowicil 200 dissolved therein isadded followed by the addition of 3 parts by weight Ungerer No. 4908perfume.

After the addition of the perfume stirring may be stopped at atemperature of about 40 C. or continued, if desired, until at about roomtemperautre. At the end of this operation an additional amount of thedeionized tap water is added to bring the total weight of the resultingliqiud detergent admixture to 1000 parts by weight. The resulting stableliquid detergent cleanser is desirably packaged in low densitypolyethylene bottles or containers for storage and/ or sale.

The preparation of detergent compositions is a fairly well developedart, as evidenced by numerous U.S. patents, see US. Pats. 2,175,285,2,356,903, 2,643,229, 2,654,913, 2,674,619, 2,677,700, 2,678,921,3,734,870, 2,781,321, 2,858,569, 2,868,731, 2,987,484, 3,129,187,3,186,948, and 3,481,880. Beeswax, the important and characterizingingredient present in substantial amounts in compositions of thisinvention, such as amounts in the range about 5-15 by weight based onthe non-aqueous components, appears to be substantially unexploited indetergent compositions. Beeswax is an important characterizingingredient of this invention since it provides a highly desirableemolliency to the resulting detergent composition while at the same timeit does not interfere with the cleansing or lathering or foamingproperties of the other ingredients. Hydrocarbon or petroleum and otherwaxes inhibit the detergency and foaming actions of the otheringredients. For example, when paraflin or hydrocarbon waxes areemployed as substitutes for beeswax in compositions in accordance withthis invention the foaming ability of the resulting detergentcomposition is substantially eliminated. Other materials, such asbentonite, fatty acids, sugars and gums, likewise when employed incompositions of this invention as a substitute beeswax yieldunsatisfactory compositions. When, however, beeswax is employed incombination with the poloxalene and the fatty alkyl ester isethionate,Pluronic F-127 and Igepon AC78, respectively, in the above-indicatedproportions with respect to beeswax, there is produced a solid detergentcomposition which possesses the desired balance of properties, such asemolliency, detergency, lathering ability, hardness, strength, storageability and the like. 1

The combination of the poloxalene together with the fatty alkyl esterisethionate, Pluronic F-l27 and Igepon AC78, respectively, is importantin the preparation of satisfactory detergent compositions. In thepreparation of the detergent compositions the poloxalene is consideredprimarily as a bulking and hardening material although also asurfactant. This material serves as a binder for the fatty alkyl esterisethionte Igepon AC-78. Pluronic F-127 when heated to its melting point(about 56 C.) appears to form a gel. This material is slightlywater-soluble at the given concentrations, is substantially neutral inpH and provides only a low foaming capability, almost negligible. Whenthis material is heated with propylene glycol, along with Igepon AC78, asticky mass is formed. When, however, beeswax is incorporated or presentthe stickiness is avoided and there is produced upon solidification ahard, nonsticky, stable mass which possesses good cleansing properties.Accordingly, the combination of the ingredients beeswax, a solvent, suchas propylene glycol and glycerin, together with a poloxalene,specifically Pluronic F-127, and a fatty alkyl ester isethionate,specifically Igepon A-78, provides the characterizing composition of thedetergents of this invention.

-As indicated hereinabove glycerin may be employed in place of propyleneglycol. Propylene glycol, however, is preferred. Glycerin, when employedas a substitute for propylene glycol in the preparation of detergentcompositions in accordance with this invention, provides or yields aheavier melt, i.e. the detergent composition during processing isheavier in stirring and milling and even in its most fluid condition isdifficult to pour. Usually it is necessary to actually physically removethe mix and to place it in the molds since it does not tend to flowreadily into the molds. Additionally, the molds then required vigorousthumping or movement to make sure the molds were uniformly filled. Whencooled, the glycerincontaining detergent compositions solidified andhardened normally and were easily removed from the mold and performedwell during washing.

Detergent compositions which do not include glycerin or propylene glycolbut which include only Igepon AC-78, Pluronic F-127 and beeswax in theamounts about 44% by weight, 44% by weight and 12% by weight,respectively, did not yield satisfactory detergent compositions from aprocessing point of view. Additionally, detergent compositions which didnot include beeswax but which did include lauric acid 6-9%, PluronicF-127 33-43%, Igepon AC-78 33-45% and talc 35-15%, did not providedetergent compositions having the desirable combination of physical anddetergency properties of this invention. Compositions made up of 4%beeswax, 9% lauric acid, 5% mannitol, 15% talc, 33% Pluronic F-127, 33%Igepon AC-78 and 1% perfume were also prepared as well as compositionswhich contained only Pluronic F-127, Igepon AC-78 and mannitol. All suchcompositions were found to be unsatisfactory. These compositions eitherdid not pour and were dull in appearance, were lumpy, too soft and lefttoo much residue during use. Similarly, as indicated hereinabove, whenparaffin wax was employed as a substitute for beeswax unsatisfactoryresults were obtained. Apparently paraffin waxes inhibit the detergencyaction of the Igepon AC-78 and also lower the lathering and detergencyaction of the resulting composition.

As mentioned hereinabove the detergent compositions both solid andliquid prepared in accordance with this invention are non-irritating.Since the detergent materials in accordance with this invention have aneutral pH in the range 6-7 and since the compositions are emollient andnon-irritating as well as being effective as cleansing agents, thedetergent compositions of this invention are particularly useful ashypoallergenic cleansing compositions. The fact that the detergentcompositions do not irritate the eye has been established by actual useof these compositions when employed for facial cleansing. Also, animaltests have been carried out employing the Draizes Rabbit Eye IrritationTests. These tests have established that the detergent compositions ofthis invention are substantially non-irritating.

Three healthy albino rabbits were employed in these tests in accordancewith the procedure suggested by Dr. Draize and described in Appraisal ofthe Safety of the Chemicals in Foods, Drugs and Cosmetics, published bythe Association of Food and Drug Ofiicials of the United States. Inthese tests 5 grams of the detergent composition were dissolved in 10ml. of distilled water.

milligrams of the soap fragrance were added to this mixture, stirredwell and then made up to 50 ml. with distilled Water, resulting in a 10%solution of soap and fragrance. 0.1 ml. of this mixture was instilledinto the right eye of each animal with no further treatment. Theuntreated left eye of each animal served as the control. Both thetreated and the controlled eyes were examined every 24 hours for 4 daysand then on the 7th day. The results of these tests indicated that theinstillation of a 0.1 ml. of a 10% mixture of the detergent of thisinvention and fragrance, prepared as described hereinabove, into theright eye of each of the three rabbits produced a very mild vesselinjection involving only the conjunctivae but on the second day ofobservation the treated eyes were normal and continued so throughout thetests. In these tests an acceptable result would be a situation whereany observed irritation cleared by the seventh day. In these tests onlya minimal irritation involving only the conjunctivae was observed andthis cleared by the second day. It was further observed that because ofthe lack of response by the rabbits tested the rabbits appeared not tofeel any pain or stinging. Based on this observation it would appearthat if when this material should enter the eyes during facial cleaningno eye irritation would be observable and this is born out by the factthat in actual use when cleaning the face with a detergent compositionin accordance with this invention irritation of the eye has not beenobserved.

As will be apparent to those skilled in the art in the light of theforegoing disclosure, many alterations, modifications and substitutionsare possible in the practice of this invention without departing fromthe spirit or scope thereof.

I claim:

1. A composition useful in the preparation of a detergent bar consistingessentially of about -15 by weight beeswax, 5-15 by weight of apolyhydric alcohol selected from the group consisting of propyleneglycol and glycerin, 30-50% by weight of a poly(oxyethylene)-poly(oxypropylene)-poly(oxyethylene)polymer having an average molecularWeight of about 11,500 and 30-50% by weight of a coconut oil acid esterof sodium isethionate.

2. A composition in accordance with claim 1 wherein said polyhydricalcohol is propylene glycol.

3. A composition in accordance with claim 1 which additionally containssodium lauryl sulfate in an amount in the range 25% by weight.

4. A composition in accordance with claim 1 wherein said beeswax ispresent in an amount of about 9% by weight, said polyhydric alcohol ispresent in an amount of about 9% by weight, said polymer is present inan amount of about 40% by weight, said coconut oil acid ester of sodiumisethionate is present in an amount of about 40% by weight, saidcomposition additionally containing about 2% by weight sodium laurylsulfate.

5. A composition in accordance with claim 4 wherein said polyhydricalcohol is propylene glycol.

6. A solid, homogeneous admixture of the composition in accordance withclaim 1 in the form of a bar.

7. A composition in accordance with claim 1 containing a minor amount,about 0.1-1% by weight, of a perfume.

8. A composition in accordance with claim 1 which contains a minoramount of allantoin in the range from about 0.05% to about 0.50% byweight.

9. A liquid detergent composition consisting essentially of thecomposition of claim 1 dispersed in water.

10. A liquid detergent composition consisting essentially of thecomposition of claim 2 dispersed in water.

11. A liquid detergent material consisting essentially of thecomposition of claim 1 dispersed in water, said composition making upfrom about 20 to about 50% by weight of said liquid detergent material.

12. A liquid detergent material consisting essentially of thecomposition of claim 1 dispersed in water, said composition making upabout 30% by weight'of said liquid detergent material. I 13'. A finelydivided particulate solid homogeneous admixtureof the composition inaccordance'with claim 1. 14. A finely divided particulate solidhomogeneous admixture of the composition in accordance withclaim 2. 15.Amethod for the'preparation of a; composition useful in the manufactureof a detergent bar and other detergent materials which comprises forminga molten admix-. ture of beeswax, a polyhydric alcohol selected fromthe: group consisting of propylene glycol and glycerin'and apoly(oxyethylene) poly(oxypropylene) -poly(oxyeth-, ylene) polymerhaving an average molecular weight of about 11,500, adding to theresulting molten admixture. finely divided coconut oil acid ester ofsodium isethionate and sodium lauryl sulfate with heating to form ahomogeneous admixture and permitting the resulting-homoge-i neousadmixture to cool and solidify, the aforesaid ingrei dients in theresulting cooled, solidified homogeneous'admixture being present in thefollowing percents by weight, beeswax 515%, polyhydric alcohol 515%,polymer 30 50%, coconut oil acid ester of sodium isethionate 30-50% andsodium lauryl sulfate 2--5%.

16. A method in accordance with claim 15.wherein said;

polyhydric alcohol is propylene glycol. 17. A method in accordance withclaim. 15 wherein the resulting cooled solidified homogeneousadmixture.is reheated until smooth and flowing, poured into inolds" and thenpermitted to cool and solidify. I 18. A method in accordance with claim15 wherein the resulting cooled solidified homogeneous. admixture isbroken up and finely divided and dispersed in water to. form a liquiddetergent composition. f

19. A method in accordance with claim 18 wherein the resulting formedliquid detergent composition comprisesfrom about 20 to about 50% byweight of said solidified homogeneous admixture.

20. A method in accordance with claim 18 wherein.

the resulting formed liquidv detergent composition comprises about 30%of said solidified homogeneous admixture.

21. A method in accordancewith 'claim 17 wherein said 2 polyhydricalcohol is propylene glycol. 4

22. A method in accordance with claim 18 wherein said polyhydric alcoholis propylene glycol.

23. A method for the preparation of a stable aqueous liquid detergentcomposition which comprises heating with stirring an admixture of water,a polyhydric alcohol selected from the group consisting of propyleneglycol and glycerin, beeswax and a poly(oxyethylene)-poly (oxy-.-

propylene)-poly(oxyethylene) polymer having an average molecular weightof about 11,500 to form a uniformly liquid admixture, adding to theresulting formed liquid admixture coconut oil acid ester of sodiumisethionate and sodium lauryl sulfate to form a uniform aqueousadmixture and incorporating additional water into the resulting uni-Iform aqueous admixture, the water being present in the resulting aqueousliquid detergent composition in the range 50-80%, the percentages byweight-of the" components making up the remainder and based on saidremainder being.5-15% beeswax, 515% polyhydric alcohol,'30

50% said polymer, 3050% coconut oil'acid ester of sodium isethionate and2'5 sodium lauryl sulfate.

24. A method in accordance with claim 23 wherein said polyhydric alcoholis propylene glycol."

25. A method in accordance with claim 23 wherein said heating withstirring of said admixture of water, poly hydric alcohol and saidpolymer is carried out to a tem perature of about 75-78" C laurylsulfate are added at a about 75-78 C.

27. A method in accordance with claim 23 wherein there is incorporatedin said uniform aqueous admixture a minor amount by weight of polyvinylpyrrolidone as a viscosity increasing agent, said polyvinyl pyrrolidonebeing incorporated therein in an amount such that the percentage byweight of said polyvinyl pyrrolidone in said remainder is about 3%.

28. A method in accordance with claim 23 wherein said additional wateris incorporated in the resulting aqueous admixture after cooling saidaqueous admixture to a temperature of about 50 C.

References Cited UNITED STATES PATENTS 'Duncan 252-550 Becher 252-117Dupuy 264-160 Henderson et a1 252-117 Geitz 252-121 10 Lundberg et al252-174 Meehan 252-155 Hooker 252-544 Haass et al. 252-117 Kamen et a1252-121 FOREIGN PATENTS Great Britain. Great Britain.

US. Cl. X.R.

252-550, 557, Dig. 16

